File: _markdown.tcl

package info (click to toggle)
tcllib 1.20%2Bdfsg-1
  • links: PTS
  • area: main
  • in suites: bullseye
  • size: 68,064 kB
  • sloc: tcl: 216,842; ansic: 14,250; sh: 2,846; xml: 1,766; yacc: 1,145; pascal: 881; makefile: 107; perl: 84; f90: 84; python: 33; ruby: 13; php: 11
file content (216 lines) | stat: -rw-r--r-- 4,911 bytes parent folder | download | duplicates (4)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
# -*- tcl -*-
##
# Support for markdown, overrides parts of coore text.
#
# Copyright (c) 2019 Andreas Kupries <andreas_kupries@sourceforge.net>
# Freely redistributable.
##
# # ## ### ##### ########

# # ## ### ##### ########
## `markdown` formatting

proc SectTitle {lb title} {
    upvar 1 $lb lines
    lappend lines "[Hash] $title"
    return
}

proc SubsectTitle {lb title} {
    upvar 1 $lb lines
    lappend lines "[Hash][Hash] $title"
    return
}

proc Sub3Title {lb title} {
    upvar 1 $lb lines
    lappend lines "[Hash][Hash][Hash] $title"
    return
}

proc Sub4Title {lb title} {
    upvar 1 $lb lines
    lappend lines "[Hash][Hash][Hash][Hash] $title"
    return
}

proc _Strong {text} { return [Undr][Undr]${text}[Undr][Undr] }
proc _Em     {text} { return [Star]${text}[Star] }

##
# # ## ### ##### ########
##

set __comments 0

proc MDCInit {} { global __comments ; set __comments 0 }

proc MDComment {text} {
    global __comments
    Text "\n[OBrk]//[format %09d [incr __comments]][CBrk]: [Hash] [OPar]$text[CPar]"
}

proc MDCDone {} {
    TextTrimLeadingSpace
    CloseParagraph [Verbatim]
}

##
# # ## ### ##### ########
##

proc MakeLink {l t} { ALink $t $l } ;# - xref - todo: consolidate

proc ALink {dst label} { return "[OBrk]$label[CBrk][OPar]$dst[CPar]" }

proc SetAnchor {text {name {}}} {
    if {$name == {}} { set name [Anchor $text] }
    return "<a name='$name'></a>$text"
}

proc Anchor {text} {
    global kwid
    if {[info exists kwid($text)]} {
	return "$kwid($text)"
    }
    return [A $text]
}

proc A {text} {
    set anchor [regsub -all {[^a-zA-Z0-9]} [string tolower $text] {_}]
    set anchor [regsub -all {__+} $anchor [Undr]]
    return $anchor
}

# Generate special code sequences for markdown command characters.  At
# the end of the render the command sequences are converted to regular
# final form whereas all unprotected special characters are quoted.

proc Back {} { return "\1\\" }
proc Tick {} { return "\1`" }
proc Star {} { return "\1*" }
proc Undr {} { return "\1_" }
proc Hash {} { return "\1#" }
proc Plus {} { return "\1+" }
proc Dash {} { return "\1-" }
proc Dot  {} { return "\1." }
proc Bang {} { return "\1!" }
proc OBra {} { return "\1\{" }
proc CBra {} { return "\1\}" }
proc OBrk {} { return "\1\[" }
proc CBrk {} { return "\1\]" }
proc OPar {} { return "\1(" }
proc CPar {} { return "\1)" }
proc VBar {} { return "\1|" }

proc LB  {} { return "\1\n" }
proc LB. {} { return "\1" }

proc c_copyrightsymbol {} {return "&copy;"}

# Modified bulleting

DIB [list [Dash] [Star] [Plus]]
DEB [list "1[Dot]" "1[CPar]"]

proc Unmark {x} {
    lappend map "\1\n" "  \n"
    # Marked special characters are commands. Convert into regular
    # form. Unmarked special characters need quoting.
    lappend map \1\\ \\
    lappend map \1`  `
    lappend map \1*  *
    lappend map \1_  _
    lappend map \1#  "#"
    lappend map \1+  +
    lappend map \1-  -
    lappend map \1.  .
    lappend map \1!  !
    lappend map \1\{ \{
    lappend map \1\} \}
    lappend map \1\[ \[
    lappend map \1\] \]
    lappend map \1(  (
    lappend map \1)  )
    lappend map \1|  |

    lappend map \\ \\\\
    lappend map `  \\`
    lappend map *  \\*
    lappend map _  \\_
    lappend map "#" "\\#"
    lappend map +  \\+
    lappend map -  \\-
    lappend map .  \\.
    lappend map !  \\!
    lappend map \{ \\\{
    lappend map \} \\\}
    lappend map \[ \\\[
    lappend map \] \\\]
    lappend map (  \\(
    lappend map )  \\)
    lappend map | "&#124;"

    #puts_stderr ZZZ(($x))
    set x [string map $map $x]

    #puts_stderr ZZZ<<$x>>
    set x
}

# Invert handling of special characters for text specified by the
# user, i.e. engine parameters of some kind.
#
# Quoted special characters are unquoted, and unquoted special
# characters get marked/protected.

proc Mark {x} {
    # Dequote non-special specials.
    lappend map \\\\     \\
    lappend map \\`	 `
    lappend map \\*	 *
    lappend map \\_	 _
    lappend map "\\#"	 "#"
    lappend map \\+	 +
    lappend map \\-	 -
    lappend map \\.	 .
    lappend map \\!	 !
    lappend map \\\{	 \{
    lappend map \\\}	 \}
    lappend map \\\[	 \[
    lappend map \\\]	 \]
    lappend map \\(	 (
    lappend map \\)	 )
    lappend map "&#124;" |

    # Protect special specials
    lappend map \\  \1\\
    lappend map `   \1`
    lappend map *   \1*
    lappend map _   \1_
    lappend map "#" \1#
    lappend map +   \1+
    lappend map -   \1-
    lappend map .   \1.
    lappend map !   \1!
    lappend map \{  \1\{
    lappend map \}  \1\}
    lappend map \[  \1\[
    lappend map \]  \1\]
    lappend map (   \1(
    lappend map )   \1)
    lappend map |   \1|

    #puts_stderr ZZZ(($x))
    set x [string map $map $x]

    #puts_stderr ZZZ<<$x>>
    set x
}

rename PostProcess PostProcessT
proc PostProcess {text} { Unmark [PostProcessT $text] }

##
# # ## ### ##### ########
return